der_read_length
static int der_read_length(unsigned char **buf, int *bufsize);
if ((seqsize = der_read_length(&buf, &toksize)) < 0)
if ((seqsize = der_read_length(&buf, &toksize)) < 0)
static int der_read_length(unsigned char **, int *);
if ((seqsize = der_read_length(&buf, &toksize)) < 0)